Flodigesattel - Forcella Vallettina

Overview

Flodigesattel - Forcella Vallettina is a genuine hors catégorie climb, the hardest classification on the scale that runs HC, 1, 2, 3, 4. Over 16.9 km it lifts you from a start elevation of 1059 m all the way to a summit at 2271 m. That is 1212 m of net elevation gain, with the road actually stacking up 1177 m of measured total ascent along the way. The average gradient is a stiff 7.15%, and because there are no meaningful flat sections to dilute it, that average tells you almost the whole story: this is a long, sustained, high-altitude effort with nowhere to truly recover.

How the Gradient Unfolds

With 1177 m of total ascent packed into 16.9 km, the climb barely gives back any of the height it takes. The near-identical net gain of 1212 m and total ascent of 1177 m confirm this is a one-directional wall rather than a rolling profile with descents to shake out the legs. Expect the gradient to hover close to that 7.15% average for long, honest stretches, ramping harder on the pitches and easing only slightly on the shallower ones. Starting already at 1059 m and finishing at 2271 m, the back half is fought in thinning air, so the final kilometres feel steeper than the numbers alone suggest even where the road holds steady.

Pacing Notes

On a climb this long, discipline beats bravado. Anchor your effort to your FTP and hold a wattage you can defend for the better part of an hour, because at 16.9 km and 7.15% the finish is a long way off. Going into the red early costs you double once you are above 2000 m and the altitude starts biting. If you do not know your threshold, run the numbers through the FTP estimator first, then ride the lower climb at or just under threshold and save any surges for the last few hundred metres to the 2271 m summit.

Gearing

Treat this as a mountain-gear climb, not a rouleur's outing. The combination of 16.9 km of length and a 7.15% average means you will be turning the pedals under load for a very long time, and the altitude only sharpens the sting. A compact chainring paired with a wide cassette is the sensible baseline: a 34×32 will get most trained riders up while keeping a workable cadence, but if you are carrying fatigue, riding at weight, or simply want to spin rather than grind, a 34×34 buys you crucial breathing room on the steeper pitches near the top. There is no penalty for the easier ratio here; the only penalty is running out of gears at 2200 m.

Summary

Flodigesattel - Forcella Vallettina is a pure, sustained HC test: long, steep, and finishing high. Pace it to your threshold, gear it low, and respect the altitude on the run to the summit.

Length: 16.9 km
Average gradient: 7.15%
Max gradient: n/a
Start: 1059 m
Summit: 2271 m
Net gain: 1212 m
Total ascent: 1177 m
Category: HC